# Section 2.11.2 (Program Objects) of the GLSL 1.50 spec says:
#
# "Linking will also fail if the program object contains objects to form a
#  geometry shader (see section 2.12), and
#	• the program contains no objects to form a vertex shader;
#	• the input primitive type, output primitive type, or maximum output
#	  vertex count is not specified in any compiled geometry shader object;
#	• the input primitive type, output primitive type, or maximum output
#	  vertex count is specified differently in multiple geometry shader
#	  objects."

[require]
GLSL >= 1.50

[vertex shader]
#version 150

out vec4 vertex;

void main()
{
	vertex = vec4(1.0, 0.0, 1.0, 0.0);
}

[geometry shader]
#version 150

layout(triangles) in;
layout(triangle_strip, max_vertices = 3) out;

in vec4 vertex[3];
out vec4 temp;
vec4 temp0[2];
void main()
{
  temp0[0] = vertex[0];

  temp0[1].x = float(inversesqrt( abs(temp0[0]).x));
  temp0[1].y = float(inversesqrt( abs(temp0[0]).y));

  gl_Position = vertex[0];
  temp = temp0[1];
  EmitVertex();
}

[fragment shader]
#version 150

out vec4 color;
in vec4 temp;

void main()
{
  color = temp;
}

[test]
link error